Fringe, Season 4

Olivia:
Walter, do you think we destroyed it? Do you think it's gone?

Walter:
I can't be sure, Olivia. What you did may have compromised Cameron's ability. He may have just displaced it. You acted against all reasonable agreements and expectations. You behaved irrationally with regard to only your intuition and instincts.

Olivia:
I guess I did.

Walter:
When I do that people say I'm crazy. I suppose I've learned that crazy's a lot more complicated than people think.